Expansion and connectivity Expansion with 2 or 4 additional DB9 ports for connecting external devices, increasing RS232 serial connectivity. Platform compatibility Compatible with Windows 11, Windows 10, Windows 8.1, Windows 8, Windows 7, Windows XP and Windows Server 20032008 (32/64bit); Linux support. Performance and chipset Based on the AX99100 performance serial controller; supports up to 920.6 KBPS communication rate for reliable RS232 transfers. PCIe slot compatibility Slot can be used for PCIe X16 slots with different lengths, enabling flexible installation in compatible systems. Benefits Extends legacy serial interfaces on modern PCs without replacing existing external devices. Broad operating system support reduces integration risk and driver concerns. data rate capability supports timesensitive serial applications. Flexible PCIe X16 slot compatibility simplifies installation across different PC chassis and motherboards. Use scenarios Industrial automation and control: connect PLCs, meters, bar code scanners, and CNC controllers to a single PC for monitoring and control. Data logging and testing: attach multiple serial instruments to capture measurements and run synchronized data collection. Legacy IT and network equipment: manage console ports on routers, switches, and other RS232 devices during maintenance or upgrades.